用括号内所给单词的适当形式填空.
1、If my bank manager ______(lend) me the money,I______(buy) a new car next month.
2、I______(have)to go to see the doctor tomorrow.
3、If you bring friends from other schools,the teacher ____(ask) them to leave.
4、You can't learn English well if you ______ (not work) hard.
5、Why not ______ (have) a party for your birthday?